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BUSINESS POSTURE

  • Business Priorities and Goals:
    • Provide a reusable and reliable React Native component for image selection and cropping.
    • Simplify the process of integrating image handling capabilities into React Native applications.
    • Offer a feature-rich and customizable solution to meet diverse developer needs.
    • Maintain a high level of quality and stability to ensure developer trust and adoption.
  • Business Risks:
    • Security vulnerabilities in the library could be exploited by malicious actors in applications that depend on it, leading to data breaches or application instability.
    • Lack of timely security updates and bug fixes could erode developer trust and lead to decreased adoption.
    • Poor performance or compatibility issues could negatively impact the user experience of applications using the library.
    • Legal and compliance risks if the library mishandles user data or violates privacy regulations.

SECURITY POSTURE

  • Existing Security Controls:
    • security control: Open Source Code - The library is publicly available on GitHub, allowing for community review and scrutiny of the codebase. Implemented: GitHub Repository.
    • security control: Dependency Management - Relies on npm or yarn for dependency management, which includes mechanisms for vulnerability scanning and updates (though not explicitly enforced by the library itself). Implemented: package.json, yarn.lock or package-lock.json.
    • security control: Platform Security - Leverages the underlying security features of the mobile operating systems (iOS and Android) for image processing and storage. Implemented: Native modules relying on OS APIs.
  • Accepted Risks:
    • accepted risk: Dependency Vulnerabilities - The library depends on third-party packages, which may contain security vulnerabilities. Mitigation relies on regular dependency updates.
    • accepted risk: Misuse by Developers - Developers integrating the library might misuse its features or not implement proper security practices in their applications, leading to vulnerabilities.
    • accepted risk: Platform Specific Vulnerabilities - Underlying mobile platforms (iOS/Android) may have undiscovered vulnerabilities that could affect the library's security.
  • Recommended Security Controls:
    • security control: Automated Dependency Scanning - Implement automated tools to regularly scan dependencies for known vulnerabilities and trigger alerts for necessary updates.
    • security control: Static Application Security Testing (SAST) - Integrate SAST tools into the development pipeline to automatically analyze the codebase for potential security flaws.
    • security control: Code Review Process - Implement mandatory code reviews, including security-focused reviews, for all code changes before merging them into the main branch.
    • security control: Input Validation and Sanitization - Ensure robust input validation and sanitization within the library to prevent common injection attacks, especially when handling image paths and cropping parameters.
    • security control: Security Audits - Conduct periodic security audits by external security experts to identify and address potential vulnerabilities.
  • Security Requirements:
    • Authentication: Not directly applicable as this is a client-side library. Authentication is the responsibility of the application integrating this library.
    • Authorization: Not directly applicable as this is a client-side library. Authorization is the responsibility of the application integrating this library.
    • Input Validation:
      • Requirement: Validate all inputs received from the application using the library, including image paths, cropping dimensions, and options.
      • Requirement: Sanitize inputs to prevent injection attacks (e.g., path traversal).
      • Requirement: Implement checks to ensure that provided image paths are within expected boundaries and accessible.
    • Cryptography:
      • Requirement: If the library handles sensitive image data in memory or during temporary storage, consider using encryption to protect it. (Note: Based on the library's description, this might not be a primary requirement, but should be considered if sensitive data handling is introduced).
      • Requirement: Ensure secure handling of any cryptographic keys or sensitive data if encryption is implemented.

DESIGN

C4 CONTEXT

flowchart LR
    subgraph "Mobile User"
        U(["Mobile User"])
    end
    subgraph "React Native Application"
        RNAPP(["React Native Application"])
        subgraph "react-native-image-crop-picker Library"
            RNICP(["react-native-image-crop-picker"])
        end
    end
    subgraph "Mobile Operating System"
        MOS_IOS(["iOS"])
        MOS_Android(["Android"])
    end
    subgraph "Device Storage"
        DS(["Device Storage"])
    end
    U --> RNAPP
    RNAPP --> RNICP
    RNICP --> MOS_IOS & MOS_Android
    RNICP --> DS
    RNAPP --> DS
    style RNICP fill:#f9f,stroke:#333,stroke-width:2px
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  • Context Diagram Elements:
      • Name: Mobile User
      • Type: Person
      • Description: End-user of the mobile application that utilizes the react-native-image-crop-picker library.
      • Responsibilities: Interacts with the mobile application, selects and crops images.
      • Security controls: Device level security controls (passcode, biometrics) to protect the mobile device and data.
      • Name: React Native Application
      • Type: Software System
      • Description: The mobile application developed using React Native that integrates the react-native-image-crop-picker library to provide image picking and cropping functionality to the user.
      • Responsibilities: Provides user interface, utilizes the react-native-image-crop-picker library, handles user interactions, and manages image data within the application context.
      • Security controls: Application level security controls (authentication, authorization, data encryption, secure storage) implemented by the application developers.
      • Name: react-native-image-crop-picker Library
      • Type: Software System
      • Description: The React Native library responsible for providing image picking and cropping functionalities. It acts as a bridge between the React Native application and the native mobile operating system's image handling capabilities.
      • Responsibilities: Provides API for image picking and cropping, interacts with native modules, returns image data to the React Native application.
      • Security controls: Input validation, secure handling of temporary files, adherence to secure coding practices within the library.
      • Name: iOS
      • Type: Software System
      • Description: Apple's mobile operating system. Provides native APIs for image access, processing, and storage that are utilized by the react-native-image-crop-picker library on iOS devices.
      • Responsibilities: Manages image access permissions, provides image processing functionalities, handles file system operations.
      • Security controls: Operating system level security controls, permission management, sandboxing, secure storage.
      • Name: Android
      • Type: Software System
      • Description: Google's mobile operating system. Provides native APIs for image access, processing, and storage that are utilized by the react-native-image-crop-picker library on Android devices.
      • Responsibilities: Manages image access permissions, provides image processing functionalities, handles file system operations.
      • Security controls: Operating system level security controls, permission management, sandboxing, secure storage.
      • Name: Device Storage
      • Type: Data Store
      • Description: Local storage on the mobile device where images are stored. This includes the device's file system and potentially photo libraries.
      • Responsibilities: Stores image files, provides access to image data for applications.
      • Security controls: Operating system level file system permissions, application sandboxing, device encryption.

C4 CONTAINER

flowchart LR
    subgraph "React Native Application Container"
        RN_JS(["React Native JavaScript Code"])
        RN_Bridge(["React Native Bridge"])
    end
    subgraph "react-native-image-crop-picker Library Container"
        RNICP_JS(["JavaScript API"])
        RNICP_Native_iOS(["Native Module (iOS)"])
        RNICP_Native_Android(["Native Module (Android)"])
    end
    RN_JS --> RNICP_JS
    RNICP_JS --> RN_Bridge
    RN_Bridge --> RNICP_Native_iOS & RNICP_Native_Android
    RNICP_Native_iOS --> MOS_IOS
    RNICP_Native_Android --> MOS_Android
    style RNICP_JS fill:#f9f,stroke:#333,stroke-width:2px
    style RNICP_Native_iOS fill:#f9f,stroke:#333,stroke-width:2px
    style RNICP_Native_Android fill:#f9f,stroke:#333,stroke-width:2px
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  • Container Diagram Elements:
      • Name: React Native JavaScript Code
      • Type: Container
      • Description: The JavaScript codebase of the React Native application that utilizes the react-native-image-crop-picker library.
      • Responsibilities: Application logic, UI rendering, calling the react-native-image-crop-picker JavaScript API.
      • Security controls: Application level JavaScript security best practices, secure coding practices.
      • Name: React Native Bridge
      • Type: Container
      • Description: The React Native bridge facilitates communication between JavaScript code and native modules.
      • Responsibilities: Serializing and deserializing data between JavaScript and native code, invoking native module functions.
      • Security controls: React Native bridge security mechanisms, minimizing data exposure during bridge communication.
      • Name: react-native-image-crop-picker JavaScript API
      • Type: Container
      • Description: The JavaScript interface of the react-native-image-crop-picker library, providing functions for image picking and cropping that are called by the React Native application's JavaScript code.
      • Responsibilities: Exposing API functions, handling JavaScript side logic, passing requests to native modules via the React Native bridge.
      • Security controls: Input validation in JavaScript, secure API design, preventing injection vulnerabilities.
      • Name: Native Module (iOS)
      • Type: Container
      • Description: Native iOS module of the react-native-image-crop-picker library, written in Objective-C or Swift. Interacts with iOS system APIs for image picking and cropping.
      • Responsibilities: Implementing iOS specific image picking and cropping logic, interacting with iOS frameworks (e.g., Photos framework, UIKit), handling image data on iOS.
      • Security controls: Secure coding practices in Objective-C/Swift, proper use of iOS security APIs, handling permissions correctly, preventing memory leaks and buffer overflows.
      • Name: Native Module (Android)
      • Type: Container
      • Description: Native Android module of the react-native-image-crop-picker library, written in Java or Kotlin. Interacts with Android system APIs for image picking and cropping.
      • Responsibilities: Implementing Android specific image picking and cropping logic, interacting with Android frameworks (e.g., MediaStore API, Activity Result API), handling image data on Android.
      • Security controls: Secure coding practices in Java/Kotlin, proper use of Android security APIs, handling permissions correctly, preventing memory leaks and buffer overflows.

DEPLOYMENT

  • Deployment Architecture Options:

    • Option 1: Direct integration into React Native application - The library is directly integrated into the React Native application code and deployed as part of the application package to app stores (Apple App Store, Google Play Store).
    • Option 2: (Less likely for this type of library) Distributed as a standalone service - This library is not typically deployed as a standalone service. It's designed to be embedded within mobile applications.

  • Detailed Deployment Architecture (Option 1 - Direct Integration):

flowchart LR
    subgraph "Developer Environment"
        DEV(["Developer Machine"])
    end
    subgraph "Build and Package"
        BUILD_RN(["React Native Build Process"])
        BUILD_iOS(["iOS Build Process"])
        BUILD_Android(["Android Build Process"])
        PACKAGE_iOS(["iOS App Package (.ipa)"])
        PACKAGE_Android(["Android App Package (.apk/.aab)"])
    end
    subgraph "Distribution"
        APP_STORE_iOS(["Apple App Store"])
        APP_STORE_Android(["Google Play Store"])
    end
    subgraph "End User Device"
        DEVICE_iOS(["iOS Device"])
        DEVICE_Android(["Android Device"])
        RNAPP_Deployed_iOS(["React Native Application (iOS)"])
        RNAPP_Deployed_Android(["React Native Application (Android)"])
    end
    DEV --> BUILD_RN
    BUILD_RN --> BUILD_iOS & BUILD_Android
    BUILD_iOS --> PACKAGE_iOS
    BUILD_Android --> PACKAGE_Android
    PACKAGE_iOS --> APP_STORE_iOS
    PACKAGE_Android --> APP_STORE_Android
    APP_STORE_iOS --> DEVICE_iOS
    APP_STORE_Android --> DEVICE_Android
    DEVICE_iOS --> RNAPP_Deployed_iOS
    DEVICE_Android --> RNAPP_Deployed_Android
    RNAPP_Deployed_iOS --> RNICP_JS
    RNAPP_Deployed_iOS --> RNICP_Native_iOS
    RNAPP_Deployed_Android --> RNICP_JS
    RNAPP_Deployed_Android --> RNICP_Native_Android
    style RNICP_JS fill:#f9f,stroke:#333,stroke-width:2px
    style RNICP_Native_iOS fill:#f9f,stroke:#333,stroke-width:2px
    style RNICP_Native_Android fill:#f9f,stroke:#333,stroke-width:2px
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  • Deployment Diagram Elements:
      • Name: Developer Machine
      • Type: Infrastructure
      • Description: The computer used by developers to write code, build, and test the React Native application and the react-native-image-crop-picker library (during development).
      • Responsibilities: Code development, local testing, building application packages.
      • Security controls: Developer workstation security practices, access control, code repository security.
      • Name: React Native Build Process
      • Type: Process
      • Description: The process of building the React Native JavaScript code and preparing it for platform-specific builds.
      • Responsibilities: Bundling JavaScript code, optimizing assets, preparing for native builds.
      • Security controls: Dependency management, build script security, secure handling of build artifacts.
      • Name: iOS Build Process
      • Type: Process
      • Description: Apple's Xcode build process for compiling native iOS code and creating an iOS application package.
      • Responsibilities: Compiling Objective-C/Swift code, linking libraries, signing the application, creating .ipa package.
      • Security controls: Apple's code signing process, secure build environment, Xcode security features.
      • Name: Android Build Process
      • Type: Process
      • Description: Google's Android Studio/Gradle build process for compiling native Android code and creating an Android application package.
      • Responsibilities: Compiling Java/Kotlin code, linking libraries, signing the application, creating .apk or .aab package.
      • Security controls: Android signing process, secure build environment, Android Studio/Gradle security features.
      • Name: iOS App Package (.ipa)
      • Type: Artifact
      • Description: The iOS application package file that is uploaded to the Apple App Store.
      • Responsibilities: Contains the compiled iOS application, resources, and metadata for distribution.
      • Security controls: Code signing, integrity checks by the App Store.
      • Name: Android App Package (.apk/.aab)
      • Type: Artifact
      • Description: The Android application package file (APK or Android App Bundle) that is uploaded to the Google Play Store.
      • Responsibilities: Contains the compiled Android application, resources, and metadata for distribution.
      • Security controls: Signing, integrity checks by the Play Store.
      • Name: Apple App Store
      • Type: Infrastructure
      • Description: Apple's platform for distributing iOS applications to end-users.
      • Responsibilities: Application hosting, distribution, security scanning, code signing verification.
      • Security controls: App Store security policies, malware scanning, code signing enforcement.
      • Name: Google Play Store
      • Type: Infrastructure
      • Description: Google's platform for distributing Android applications to end-users.
      • Responsibilities: Application hosting, distribution, security scanning, signing verification.
      • Security controls: Play Store security policies, malware scanning, signing enforcement, Play Protect.
      • Name: iOS Device
      • Type: Infrastructure
      • Description: End-user's iOS mobile device where the application is installed and run.
      • Responsibilities: Running the application, providing user interface, executing application code.
      • Security controls: Device level security controls, operating system security, application sandboxing.
      • Name: Android Device
      • Type: Infrastructure
      • Description: End-user's Android mobile device where the application is installed and run.
      • Responsibilities: Running the application, providing user interface, executing application code.
      • Security controls: Device level security controls, operating system security, application sandboxing.
      • Name: React Native Application (iOS/Android)
      • Type: Software System
      • Description: The deployed React Native application on the end-user's device, including the integrated react-native-image-crop-picker library.
      • Responsibilities: Providing image picking and cropping functionality to the end-user, interacting with the mobile OS and device storage.
      • Security controls: Application level security controls, leveraging device and OS security features, library security controls.

BUILD

flowchart LR
    subgraph "Developer"
        DEV_CODE(["Developer Code Changes"])
        DEV_PC(["Developer Workstation"])
    end
    subgraph "Version Control"
        GIT_REPO(["GitHub Repository"])
    end
    subgraph "CI/CD System"
        CI_SERVER(["CI Server (e.g., GitHub Actions)"])
        BUILD_AUTOMATION(["Build Automation Scripts"])
        DEPENDENCY_CHECK(["Dependency Vulnerability Check"])
        SAST_SCAN(["SAST Scanner"])
        LINTER(["Linter"])
        BUILD_PROCESS(["Build Process (RN, iOS, Android)"])
    end
    subgraph "Artifact Repository"
        ARTIFACT_REPO(["Artifact Repository (e.g., npm, GitHub Packages)"])
        BUILD_ARTIFACTS(["Build Artifacts (npm package)"])
    end
    DEV_CODE --> DEV_PC
    DEV_PC --> GIT_REPO
    GIT_REPO --> CI_SERVER
    CI_SERVER --> BUILD_AUTOMATION
    BUILD_AUTOMATION --> DEPENDENCY_CHECK & SAST_SCAN & LINTER & BUILD_PROCESS
    DEPENDENCY_CHECK --> CI_SERVER
    SAST_SCAN --> CI_SERVER
    LINTER --> CI_SERVER
    BUILD_PROCESS --> CI_SERVER
    CI_SERVER --> ARTIFACT_REPO
    BUILD_ARTIFACTS --> ARTIFACT_REPO
    style ARTIFACT_REPO fill:#ccf,stroke:#333,stroke-width:2px
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  • Build Process Description:
    • Developer makes code changes on their workstation.
    • Changes are committed and pushed to the GitHub repository.
    • CI/CD system (e.g., GitHub Actions) is triggered by code changes.
    • Build automation scripts are executed by the CI server.
    • Security checks are performed:
      • Dependency vulnerability check: Scans dependencies for known vulnerabilities.
      • SAST scanner: Static Application Security Testing to identify potential security flaws in the code.
      • Linter: Code linting to enforce code quality and style, which can indirectly improve security.
    • Build process is executed to compile and package the library (React Native, iOS, Android components).
    • Build artifacts (e.g., npm package) are created and published to an artifact repository (e.g., npm registry, GitHub Packages).
  • Build Process Security Controls:
    • security control: Secure Code Repository - Using GitHub with access controls, branch protection, and audit logs. Implemented: GitHub Repository settings.
    • security control: CI/CD Pipeline Security - Secure configuration of CI/CD system, access control, secret management for API keys and credentials. Implemented: CI/CD platform configuration (e.g., GitHub Actions settings).
    • security control: Automated Dependency Scanning - Using tools like npm audit, yarn audit, or dedicated dependency scanning tools in the CI/CD pipeline. Implemented: CI/CD pipeline scripts.
    • security control: Static Application Security Testing (SAST) - Integrating SAST tools into the CI/CD pipeline to automatically analyze code for vulnerabilities. Implemented: CI/CD pipeline scripts, SAST tool integration.
    • security control: Code Linting - Enforcing code quality and style guidelines using linters in the CI/CD pipeline. Implemented: CI/CD pipeline scripts, linter configuration.
    • security control: Build Artifact Signing - Signing build artifacts (e.g., npm packages) to ensure integrity and authenticity. Implemented: Build scripts, artifact repository settings.
    • security control: Artifact Repository Security - Secure artifact repository with access controls and vulnerability scanning. Implemented: Artifact repository platform security features (e.g., npm registry, GitHub Packages security settings).

RISK ASSESSMENT

  • Critical Business Processes:
    • Providing a secure and reliable image picking and cropping library for React Native developers.
    • Maintaining developer trust and ensuring wide adoption of the library.
    • Protecting the reputation of the library and applications that use it.
  • Data to Protect and Sensitivity:
    • User Images: Potentially sensitive personal photos or images depending on the application context. Sensitivity level varies greatly depending on the application using the library (e.g., healthcare app vs. social media app).
    • Cropping Parameters: Relatively low sensitivity, but could be exploited if not properly validated (e.g., path traversal).
    • Temporary Files: Temporary image files created during processing. Sensitivity depends on the content of the images. Should be securely handled and deleted after use.

QUESTIONS & ASSUMPTIONS

  • Questions:
    • What is the intended scope of security for this library? Is it primarily focused on preventing vulnerabilities within the library itself, or also providing guidance to developers on secure integration?
    • Are there any specific compliance requirements (e.g., GDPR, HIPAA) that applications using this library might need to adhere to, and how does the library support these?
    • What is the process for reporting and addressing security vulnerabilities in the library?
    • Are there any plans for formal security audits or penetration testing of the library?
  • Assumptions:
    • The primary users of this library are React Native developers who may or may not have deep security expertise.
    • Security vulnerabilities in this library could have a wide impact due to its potential for broad adoption in the React Native ecosystem.
    • The library is intended to be used in a variety of mobile applications with different security and privacy requirements.
    • The maintainers of the library are committed to addressing security concerns and maintaining a secure codebase.